1990-2018 Mercedes G Class SUV Maintenance and care -> Maintenance User Manual
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Maintenance and care -> Maintenance for Your Mercedes G Class SUV Third Generation (1990-2018)

X
Turn cap : further counter-clockwise and
remove it.
If the coolant is at the level of marker bar
= in the filler neck when cold, there is
enough coolant in coolant expansion
tank ;.
If the coolant level is approximately 0.6 in
(1.5 cm) above marker bar = in the filler
neck when warm, there is enough coolant
in expansion tank ;.
X
If necessary, add coolant that has been
tested and approved by Mercedes-Benz.
X
Replace cap : and turn it clockwise as far
as it will go.
For further information on coolant, see
(Y page 348).
Adding washer fluid to the windshield
washer system/headlamp cleaning
system
G
WARNING
Windshield washer concentrate is highly
flammable. If it comes into contact with hot
engine components or the exhaust system it
could ignite. There is a risk of fire and injury.
Make sure that no windshield washer
concentrate is spilled next to the filler neck.
Example: washer fluid reservoir
X
To open: pull cap : upwards by the tab.
X
Add the premixed washer fluid.
X
To close: press cap : onto the filler neck
until it engages.
Further information on windshield washer
fluid/antifreeze (Y page 349).
Brake fluid level
!
If you notice that the brake fluid level in
the brake fluid reservoir has fallen to the
MIN mark or less, check the brake system
immediately for leaks. Also check the
thickness of the brake linings. Visit a
qualified specialist workshop immediately.
Do not add brake fluid. This does not
correct the error.
Only check the brake fluid level when the
vehicle is on a level surface.
If the brake fluid level is between MIN
mark : and MAX mark ; on the brake fluid
reservoir, it is correct.
Maintenance
Service interval display
Service messages
Information on the type of service and service
intervals (see the separate Maintenance
Booklet).
You can obtain further information from an
authorized Mercedes-Benz Center or at
(USA only).
The ASSYST service interval display informs
you of the next service due date.
If a service due date has been exceeded, you
also hear a warning tone.
286
Maintenance
Maintenance and care
The multifunction display shows a service
message for several seconds, e.g.:
Service A in 99999 MilesService A in 99999 Miles
Service A Due NowService A Due Now
Service A Exceeded By 99999 MilesService A Exceeded By 99999 Miles
Maintaining the time-dependent service
schedule:
X
Before disconnecting the battery, note
down the service due date displayed.
or:
X
After reconnecting the battery, subtract
the battery disconnection periods from the
service date shown on the display.
i
The service interval display should not be
confused with the 4 engine oil level
display.
The symbol and the letter indicate which type
of service is due:
¯
Minor service AA
±
Major service BB
The ASSYST service interval display does not
take into account any periods of time during
which the battery is disconnected.
Hiding a service message
X
To hide the service message, press the
% back button on the multifunction
steering wheel (Y page 31)(Y page 207).
Displaying service messages
Use the buttons on the multifunction steering
wheel.
X
Switch on the ignition.
X
Press V or U to select the standard
display menu on the steering wheel
(Y page 208).
X
Select & or * to select the service
interval display.
The ¯ or ± service symbol and the
service due date are displayed.
Points to remember
The specified maintenance interval takes only
the normal operation of the vehicle into
account. Under arduous operating conditions
or increased load on the vehicle,
maintenance work must be carried out more
frequently, for example:
R
regular city driving with frequent
intermediate stops
R
if the vehicle is primarily used to travel
short distances
R
use in mountainous terrain or on poor road
surfaces
R
if the engine is often left idling for long
periods
Under these or similar conditions, have, for
example, the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must
be checked more often. Further information
can be obtained at a qualified specialist
workshop, e.g. an authorized Mercedes-Benz
Center.
Fuel/water separator
H
Environmental note
Dispose of service products in an
environmentally responsible manner.
!
If you continue driving without having the
fuel/water separator serviced, this could
cause damage to the engine. Any resulting
damage is not covered by the warranty.
If the fuel/water separator needs servicing,
the following message appears in the
multifunction display:
You will also hear a brief warning tone.
Maintenance
287
Maintenance and care
Z
X
Visit a qualified specialist workshop as
soon as possible.
Care
General notes
G
WARNING
Many cleaning products can be hazardous.
Some are poisonous, others are flammable.
Always follow the instructions on the
particular container. Always open your
vehicle's doors or windows when cleaning the
inside.
Never use fluids or solvents that are not
designed for cleaning your vehicle.
Always lock away cleaning products and keep
them out of reach of children.
!
For cleaning your vehicle, do not use any
of the following:
R
dry, rough or hard cloths
R
abrasive cleaning agents
R
solvents
R
cleaning agents containing solvents
Do not scrub.
Do not touch the surfaces or protective
films with hard objects, e.g. a ring or ice
scraper. You could otherwise scratch or
damage the surfaces and protective film.
!
Do not park the vehicle for an extended
period straight after cleaning it, particularly
after having cleaned the wheels with wheel
cleaner. Wheel cleaners could cause
increased corrosion of the brake discs and
brake pads/linings. For this reason, you
should drive for a few minutes after
cleaning. Braking heats the brake discs and
the brake pads/linings, thus drying them.
The vehicle can then be parked.
H
Environmental note
Dispose of empty packaging and cleaning
cloths in an environmentally responsible
manner.
Regular care of your vehicle is a condition for
retaining the quality in the long term.
Use care products and cleaning agents
recommended and approved by Mercedes-
Benz.
Exterior care
Automatic car wash
G
WARNING
Braking efficiency is reduced after washing
the vehicle. There is a risk of an accident.
After the vehicle has been washed, brake
carefully while paying attention to the traffic
conditions until full braking power is restored.
!
Never clean your vehicle in a Touchless
Automatic Car Wash as these use special
cleaning agents. These cleaning agents can
damage the paintwork or plastic parts.
!
Make sure that the automatic car wash is
suitable for the size of the vehicle. Fold in
the exterior mirrors before the vehicle is
washed. The exterior mirrors could
otherwise be damaged.
!
Make sure that the automatic
transmission is in position N when washing
your vehicle in a tow-through car wash. The
vehicle could be damaged if the
transmission is in another position.
!
Make sure that:
R
the side windows and sliding sunroof are
closed completely.
R
the blower for the ventilation/heating is
switched off (airflow control is turned to
position 0/the à and Á buttons
are switched off).
R
the windshield wiper switch is at position
0.
The vehicle could otherwise be damaged.
You can wash the vehicle in an automatic car
wash from the very start.
288
Care
Maintenance and care

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